Wire-nail-iviaking machine



(No Model.) A 3 Sheets-Sheet 1.

G.. W. BOND.

WINE NAIL MAKING MACHINE.

No. 529,475. Patented Nov. 20, 1894.

Ncnms PETERS ce.. vno'rolLlTHo.. wAsHmoTeN u c IN@ Model.) 3 Sheets-Sheet 2.

Gr.` W. BOND. WINE NAIL MAKING MACHINE.

No. 529.475. Patented Nov. 20, 1894.

(No Model.)

3 Sheets-Sheet. G. W. BOND. WIRE NAIL MAKING MACHINE. No. 529,475.' Patented Nov. 20, 1894.

.naz w Q NQ N B f FH 3N H-x-H A f. u QH @n m B, A Q- w N1 w e lL* J H i llNrTnn STATns FATnNT @Tarea GEORGE IV. BOND, OF RAYNIIAM, MASSACHUSETTS.

KING MACHINE.

SPECIFICATION forming part of Letters Patent No. 529,475, dated November 20, 1 894.

Application filed March 8, 1894:.

To all wtom it may concern.-

Be it known that I, GEORGE IV. BOND, a citi- Zen of the United States, residing at Raynham, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in VVire-Nail-h/Iak` ing Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to nail/machines, and its object is to produce rapidly and cheaply, double ended nails or dowels, such as are largely used for fastening together the parts of barrel heads, boxes, furniture, and the like.

The machine whichl have invented consists of a combination of feeding devices, cutters, and grippers, by means of which a wire is fed, cut 0E in proper lengths and pointed, and then upset at any desired place to form a head between the pointed ends. The moving parts are all actuated from a single driving shaft which carries suitable cams.

In the drawings, Figure l is a perspective view of the machine. Fig. 2 is a top plan view. Fig. 3 is a longitudinal section on line 3-3, Fig. 2. Fig. 4 is a cross section on lines 4 4, Fig. 2. Fig. 5 shows the swing guide for the wire. Fig. 6 shows one of the gripping dies. Fig. 7 is one of the cutters, and Fig. S shows a dowel or nail made by the machine.

The frame A supports suitable bearings B for the driving shaft C, which has fast and loose pulleys c c', and a flywheel c2. At one end of the shaft is a crank disk D carrying a crank pin d, which is radially adjustable in a diametrical slot in the disk, by means of a screw d. A pitman E is connected with the crank pin by a ball joint, the brasses e being adjustable for wear as usual. The lower end of the pitman connects by a similar ball joint with a rock arm f on a rock shaft F extending transversely across the machine, and journaled in bearings j. Secured to this rock shaft is an upright feed arm G, at the upper end of which is a stationary jaw g having a shank fitting into a hole in the arm. Below this jaw is an inclined jaw g hinged at its Serial No. 502,895. (No model.)

lower end, and having its upper end pressed against the stationary jaw g by a ilat spring g2. The inclined jaw is hinged in a block G which is adjustably fastened to the arm G by a bolt g3 passing through a slot g4 in the arm. A screw g5 enables the block G to be pushed up to press the jaw g tightly against the jaw g.

In the arm G, in line with the stationary jaw, is a hole g through which is passed the wire X, which is firmly nipped between the jaws. Bolted to one side of the arm G is a bracket G2, on which are carried straightening wheels G3, and G4, and a wiping device, such as the box G5 filled with oiled waste. The wire passes through these devices before reaching the feed jaws g g. these jaws is a detent clamp H, consisting of a stationary jaw h and a movable jaw h', mounted on a short shaft which is journaled in the bearing B. This jaw h has a tail h2 which rests against the periphery of a cam H on the shaft C. At the proper times, the cam closes and opens the jaws h h. Adjacent to the clamp on each side, are guides I K, the latter being vertically' adjustable in an arm 7.a.

The foregoing devices serve to straighten, feed, and guide the wire to the nail forming dies, and to detain thewirefrom being pulled back when the feeding arm is retracted to get a fresh hold. It now remains to describe the means by which the wire is cut off, pointed at each end, and upset to form the head. In brief these results are effected by four dies and two cutters. The latter sever the wire and forni the point at 'one cut. The dies grip the ends of the severed piece of wire, and one pair moves toward the other pair to upset the metal between them.

Rigidly mounted on, or formed integral with the frame A is the die socket L in which are held by set screws one or more gripper dies M. These are preferably steel bars, having in their working ends grooves m to receive the Wire X and preferably roughened to give them a firm hold. In each of the other three die sockets L', L2, L3, are one or more of these dies M, and theyare all set at an acute angle, proferably forty-live degrees, with the line of the wire X, the apex of the angle between the dies in each pair of sockets pointing in the direction said pair will move when forming the head upon the nail.

I iind it essential to In line .with

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the operation of my machine that the dies be set at any acute angle to the wire, as described above, and as shown in the drawings. In the sockets L2 L3 are cutters N, arrange behind the gripper dies M. Each cutter has two cutting edges n crossing each other, so that when the two cutters are forced against the opposite sides ot" the wire, it will be severed, and the cut ends of the wire will be beveled to a point, as shown in Fig. 8. The dies and cutters all lie in the same horizontal plane. As stated above the socket L is stationary. The other sockets are movable, sockets L L2 having motion transverse to the wire in order taco-operate with sockets L L3 respectively in gripping it; while sockets L2 L2 havea movement lengthwise ot' the Wire to eect theformation of the head upon the nail. Socket L2,therefore, has both motions. The construction which permits and accomplishes these movements is as follows: Socket L is mounted upon or forms a part of a lever Z fastened to or integral with a longitudinal rock shaft O journaled` on conical bearing pins P. Socket L3 is similarly mounted upon a transverse rock shaft O supported upon pins P. The lever Z2 carrying socket L2 is fast on atransverserock shaft O2supported on pins P2 which are carried in a yoke O3, journaled on alongitudinal axis on pinsP2. This mountingof the socket L2 constitutes a universal joint which permits it to be moved both lengthwise of and transverse to the wire. The conical .pins are all adjustable for wear by means of plates Q and screws q, which also permit the pins to be readily removed.

The sockets L L2 are simultaneously rocked ontheir pinsP P by a cam R on the shaft C, which bears against the upper part of the levers Z Z2. The lengthwise movement of the socket L2 L3 is produced by the transverse cam shaft S which has a hardened plate s bearing against the levers carrying the sockets. The cam shaft is actuated by an arm s connected by a ball bearing with the pitman S which hasat its upper end a yoke encircling a cam or eccentric R on the shaft C. Attached to each socket is a retracting spring, to insure the opening of the dies after the nail has been made. These springs may be of any suitable construction, and may be omitted when the machineis run at low speed. In the drawings l have shown one form of spring, being a bent steel bar T rigidly held at one end in a block t, and having its free end connected by a rod t with the socket.

A cross bar U is held by adjusting screws u in standards B2 on the frame A, and limits the backward movement of the sockets L2 L3 after the head is formed. The amount of this movement determines the amount of material used to form the head. A movable or swing guidefor the wire is supported by this cross bar, and serves to carry the wire out of the cutter in the socket L3, so as to insure its beingzfreetobe fed forward for the next nail. This guide V depends from a block o in a lug w rising from a plate WV which is secured by bolts u. to the cross bar U, said bolts passing through slots w to render the plate longitudinally adjustable. The guide Vis thus capable of swinging transversely to the path of the wire, and toward and away from the socket L3. A bar Y in the socket L2 operates to push the guide toward the socket L2Awhen the sockets L2 L3 come together. When they separate, the guide is swung away from the socket L2 by means of a coiled spring o2 acting against an arm on the block o. A screw r3 serves as a stop to regulate the normal position of the guide.

A clearer Z, consisting of a thin blade adjustably secured to a stationary arm e, projects between the sockets L L2 and serves to push the formed nail out of the dies when the sockets separate. The arm z is bolted to one of the standards B2 supporting the cross barU.

A screw b,- carried by the framework contacts with a lug Z on the socket L and sustains it against lengthwise pressure when the nail is formed, thus relieving the pins P from all undue strain.

The operation of my machine is as follows: The wire is nipped by the, feed jaws g g and the forward movement of the feed arm pushes it through the guides, the detent `clamp being open, until the end of the wire lies between the dies,-which now stand retracted. The detent clamp then seizes the wire, and the feed arm movesback for another hold, carrying with it the straightener and oiler which thus operate on a fresh length of wire. The range of movement of the feed arm and consequently the length. of the nail, is regulated by the radially adjustable crank pin d. As soon as the wire has been fed, the socket L moves toward the socket L and likewise the socket L2 moves toward the socket L2, the dies in each pair gripping the wire firmly, and the cutters in the last named pair severing and pointing the wire. (See Fig. 3.) The sockets L2 L3 then move simultaneously ltoward the other pair, thereby upsetting a head on the piece of wire between them, which is iirmly held bythe dies and the cutters. The sockets then separate, and releasethe nail, any tendency to stick in the dies being prevented by the clearer Z. At thesame time, the swing guide frees the end of the wire from the cutters, and holds it in a position to be fed forward by the next stroke of the feed arm.

IOS

Having thus described my invention, what l. A nail making machine, comprising Aa wire-feedin g device, a-detent clamp, two pairs of gripping dies, aV pair of cutters adjacent to and moving with one pair of dies, and means for causing said latter pair of dies to approach the other pair, substantially as described.

2. In awire nailfmaking machine, the combination with a stationary die, of a die movable transverse yto the wire to co-act with the stationary die in gripping it, a third die movA able both transverse and lengthwise ofthe wire, and a fourth die movable lengthwise of the wire only, the third die co-acting with the fourth to grip the wire, and the two pairs of gripping dies co-acting to upset the wire between them, substantially as described.

3. In awire naibmaking machine, the combination with a pair of gripping dies set at an acute angle to the line of the wire, of a second pair of gripping dies and a pair of pointing cutters adjacent thereto, all set at an acute angle to the wire, the apex of the angle formed by one pair of dies pointing toward the apex of the angle formed by the other pair, substantially as described. i 4. In a Wire-nail-making machine, the combination with a stationary die-socket, of a diesocket lever fulcrumed on an axis parallel with the line of the Wire, a die socket lever fulcrumed on an axis transverse to the line of the wire, a die-socket lever fulcrumed on a universal joint so as to have motion both transverse and lengthwise of the Wire, and means for actuating these levers, substantially as described.

5. In a wire-nail-making machine, the combination with the stationary die-socket, of three movable die-sockets each mounted on a lever, a driving shaft carrying cams for moving the rst and second of said levers, and a cam shaft actuated from said driving shaft, for moving the second and third of said levers, substantially as described.

6. The combination with the stationary diesocket L, of the movable sockets L', L2, L3, the rock shafts O, O', O2 supporting said sockets, the yoke O3 supporting the shaft O2, the driving shaft C carrying the cams R, R', the cam shaft S having a rock arm s', and the pitman S connecting said arm with the cam R', substantially as described.

7. In a nail making machine, the combination with the cross bar U, of the plate W adjnstably secured thereto, the block o journaled on the plate W, and provided with an arm, a coiled spring Q22 acting against said arm, and the guide V depending from said block, substantially as described.

In testimony whereof I afx my signature in presence of two Witnesses.

GEORGE WV. BOND.

Witnesses:

ARBA N. LINCOLN, CHARLES L. Foorn. 

